Photographer Don Krohn’s new book, “On Cape Cod,’’ features photographs from across the Cape. Each week in this section we’ll feature one photo from each of the Cape’s 15 towns and Krohn’s descriptions of his work.

You wind along small roads in Monument Neck to get to the modest parking lot near the railroad bridge tower. If your timing is right, the warning horn will blast and the gently arching 544-foot span, balanced by two massive counterweights, will glide down to allow a train to cross, and soon after will rise up in stately manner to its position 135 feet above mean high water. There is appealing whimsy and grand style in this notable 1935 structure, to be seen in the cone-shaped towers and the large curlicues bracing the U.S. Army Corps of Engineers’ famous “Corps Castle’’ insignia. As kids we always called it London Bridge when saw it on our way to and from the Cape. There are a few picnic tables near the parking area — simple charming spots to have lunch and enjoy the scene.

The Cape Captured

“On Cape Cod’’ by Don Krohn, published by David R. Godine, Publisher.